Door lock



Jan. 29, 1952 w. FLOYD 2,584,088

DOOR LOCK Filed Oct. 17, 1949 4 Sheets-Sheet l IZ E r ilig ig /42 128I06 I08 Inventor Will/am Floyd WWW 8% W. FLOYD DOOR LOCK Jan. 29, 1952 4Sheets-Sheet 2 may? I l /24 /22 I32 24 Filed Oct. 17, 1949 m w d 9 y 0 nH -m M .H m %M Jan. 29, 1952 w. FLOYD 2,534,038

DOOR LOCK Filed Oct. 17, 1949 4 Sheets-Sheet a Fig. 4.

Inventor Will/an Floyd By @Mm WWW Jan. 29, 1952 w. FLOYD 2,584,088

DOOR LOCK Filed Oct. 17, 1949 4 Sheets-Sheet 4 I rwentor William FloydWW 29m Patented Jan. 29, 1952 UNITED STATES PATENT OFFICE DO O K WilliamFloyd, New York, N. Y.

Application October 17, 1949, Serial No, 121,721

4 Claims.

This invention comprises novel and useful improvements in a door lockand more specifically pertains to a mechanism for simultaneouslylatching a door at a plurality of points, which mechanism is combinedwith a door latch,

The principal object of this invention resides in providing an improvedconstruction of mechanisrn for securely latching a door at a pluralityoi points about its edges; in providing improved mechanism for impartingstraight line motion to each of the locking bars or latches; inproviding a compact centrally disposed control mechanism forsimultaneously operating all of the latching means; in compactlycombining the latch control means with the customary door knob and itslatch; in providing a locking mechanism which may be readily applied toexisting types of doors and door jambs.

Further important objects of the invention reside in providing animproved locking mechanism for a door which shall greatly improve thesecurity of the door fastening means, by Simultaneously locking the doorat a plurality of spaced points about its periphery under the control ofa single locking and unlocking mechanism.

These, together with various ancillary objects or" the invention whichwill later become apparent as the following description proceeds, areattained by this device, a preferred embodiment of only in the attacheddrawings, wherein;

Figure l is a front elevational view, taken from the inside 01 a door,showing the manner of applying the invention to a door and door jamb,certain concealed parts being indicated by dotted lines;

Figure 2 is a front elevational view of the leading or opening edge ofthe door showin the mechanism applied thereto;

Figure 3 is a front elevational view of the door jamb showing the latchretainers applied thereto in accordance with this invention;

Figure 4 is a vertical transverse sectional view through a portion of adoor and the locking me h nism a i d t er Figure 5 is a verticallongitudinal sectional view showing the interior mechanism of thelocking means and this taken upon the plane of the section line 55 ofFigure 4;

Figure 6 is an exploded perspective View showing in disassembledposition the various component parts contained within the housing of thelockin me ha sm;

Figure '7 is a detail view in vertical section, taken upon the plane ofthe section line l ,-l of 2 Fi u e owin he sp n me ns fo biasin t e o ig h nism int s o kin and e: l asing pos t o A Figure 8 is a verticaltransverse sectional View taken through one of the latch means in theiront edge of the door;

Figure 9 is a side elevational view of the latch,- ing means shown inFigure ,8, the cover plate thereof being removed;

Figur 10 is an xp d d p r pecti e view of one of the latches, itsoperating pinion and crank;

Figure ll isan ass mb y Pers t ve i w show? i g a portion, at t ear'edse'0: a door and the as ia d i b o e he wi h he la ch nd keeper ssociat dt erewith; a

Figure 12 is an enlarged detail view in vertical section of the latchmechanism shown in Figure 11,

Referring now more specifically to the attachfid drawin s, er in iknumera s n ca e m r pa ts hro gh t e a u i ws. '0 de ig at s generally adoor which is shown hinged as at I; to a rear door iamb I4 andassociated with a front door jamb I6.

A sociat d it e door l0 nd he lambs 4 and the ockin m h nism fo m g hesubject of this invention, and comprising a loci; casing l8 which may besecured to the door in an su table an er u h as by iaste ioe sc ew 5tend ng hr ugh ea s car ied y t lock nsthou h the lock casing i s own adetachably bolted to the inner suriace of the door it, it will be e yunder tood tha t p nc p f th s in e on c ntempla othe mou i s, c a forex m ece si g the lock casing l8 within a cavity in the door.

As di ed by h do ted l ne sh wn n Fi e 1 t e ront e ge o h doo hasembedd d or recessed therein a pair of latch or bolt casinss indi ated t25 and 6, h e the rear ed of the do r s p o ided. with a s mila l re esed bolt casing 28. The door jarnbs l4 and 86, are provided with keepermeans cooperating with each of these bolt casings.

Referring now more specifically to Figure 4, and also with reference toFigures 5 and 6, it will be evident that the casing 18 comprises agenerally rectangular box having detachable front and rear walls 30 and32, respectively, secured as by screws 34 to the casing. Journaled inthese walls and ro tab y receiv d a or ex en in th u he r I0, is halt 36which s provi eo with akeyway 3!! adjacent. one end the eof fo the recet on o a key 40,w i1e an op rating 3 knob 42 is suitably secured to theend of the shaft for rotating the same as set forth hereinafter.

The extremity of the shaft 38 opposite from the knob 42 is suitablyconnected to a key controlled locking cylinder 44 of any suitable typewhich is mounted in a recess in the outer face of the door I8 inaccordance with conventional practice. This locking cylinder is intendedto fasten the locking mechanism in its latched or released positionsselectively.

As shown best in Figures 4 and '7, the shaft 36 adjacent the plate 38 isprovided with a pair of apertured ears 46 which are pivotally engaged bya guide pin 48 whose upper extremity is loosely slidable through anaperture 58 in a lug 52 extending laterally from the plate 38. A coilspring 56 is seated between the ears 46 and the lug 54, and surroundsthe rod 58, to yieldingly bias the shaft 36 toward a position on eitherside of its dead-center position as shown in Figure '7. This springmeans, therefore, urges the shaft 36 into selective positions to engagethe latching instrumentalities or to releas the same, when the shaft 36has been turned past its dead-center position in either direction.

A generally rectangular plate 58 which may comprise the main bolt of thelocking mechanism is slidably received in the casing I8 in upper andlower guides formed between integral longitudinal ribs 88 of the top andbottom walls of the casing I8, and laterally extending longitudinalshoulders upon flanges 62 of the plate 30. As

shown best in Figures 4, 6 and 5, the lock member 58 is provided with atransverse, vertically disposed elongated slot 64 through which theshaft 36 extends, and which slot is operatively engaged by a cam oreccentric member 86 slidably received upon the key 48. The arrangementis such that when the shaft 38 is rotated by the knob 42, the cam oreccentric 66 will engage the walls of the slot 64, and advance orretract the lock 58 as desired.

Keyed upon the shaft 36 by means of the above mentioned key 48, are apair of latch actuating eccentrics 68 and it which are respectivelyadapted to actuate the latches disposed at th front edge of the door andthat disposed at the rear edge thereof.

Suitable spacer washers I3 are disposed between the members 68, B8 and Iand upon the outside thereof, for properly spacing the associated partsin a compact manner.

As clearly set forth in Figures 6 and 5, the eccentric 18 is encircledby an eccentric strap 72 which is detachably secured as by a pin 74 witha rearwardly extending actuating rod 76 which passes through an aperture18 in the back of the casing l8 and; extends thence to actuate the rearbolt as indicated in Figure l.

The eccentric 68 is surrounded by an eccentric strap 88 to which ispivotally connected as by a pin 82, a vertically and upwardly extendingactuating rod 84 which passes through an aperture 86 in the top wall ofthe casing I8, and thence extends into operative engagement with theupper locking means 24 on the front edge of the door.

As shown best in Figure 6, a vertically disposed lower actuating rod 88is slidably disposed in aligned apertures 98 in the upper and lowerwalls of the casing I8, in a manner parallel to the rod 84, and at itsupper extremity is provided with a laterally disposed arm 92 whichencircles the rod 84 and is secured thereto as at 94, wheres by theeccentric 68 will simultaneously'operate in 4 a vertical reciprocationthe rods 84 and 88 for simultaneously operating the upper and lowerlocking means 24 and 26 disposed at the front edge of the door.

As so far described, it will be seen that when the key operated lockingmeans 44 is released, the knob 42 is free to rotate the shaft, 36,thereby simultaneously operating the latch rods 84, 88 and 18 as well asthe main latching bolt 58. The spring 56 as above mentioned, biases thismechanism selectively into the locked or unlocked position as the shaftpasses its dead-center position with respect to the spring.

Attention is now directed more specifically to Figures 1, 11 and 12 fora better understanding of the bolt mechanism 28 at the rear edge of thedoor.

As shown best in Figure 12, the rear edge of the door preferablyadjacent its mid-point, is provided with a mortise 94 within which isreceived a lock casing 96 secured in any suitable manner, which latterslidably receives a locking bolt 98. Registering elongated slots I88 andI82 are provided in the inner surface of the door I8 and the casing 86for slidably receiving a bolt or other fastening means E84 whose innerextremity screw-threadedly engages the locking bolt 98 and whose headedouter end extends through an eye I88 formed on the end of the abovementioned actuating rod 78. In the door jamb i4 is appropriately formeda keeper recess or socket wherein is inserted a keeper N38 for receivingthe end of the locking bolt 98 when the latter is advanced into lockingposition by the actuating rod 76 in the manner above mentioned.

Attention is next directed to Figures 8 and 9 in conjunction with Figure1 for a better understanding of the upper and lower locking bolts of thefront edge of the door. Since the locking casings 24 and 28 and theirenclosed mechanisms are identical, the showing and description ofFigures 8 and 9 will suiiice for each. Mortised or recessed into thefront edge of the door in each of the upper and lower positions shown inFigure 2, are bolt housings, that of 24 being indicated in Figures 8 and9.- The housing 24 is of generally rectangular shape having side L Wallsto which is detachably secured a cover plate III) as by means offastening screws H2. Rotatably journaled in the housing 24 is a stubshaft H4 whose outer extremity has a lever arm IIE secured thereto as bya set screw IIB. The outermost extremity of the arm H6 is provided withan aperture I28 for engagement by one of the actuating rods 84 or 88above mentioned. At its inner extremity, the stub shaft IE4 is providedwith a squared or splined portion I22 adapted to non-rotatably receivethe hub of a gear I24 which is in mesh with the rack teeth I26 of alatching bar I28. The stub shaft, pinion and latching bar are shown indetail in the composite perspective view of Figure 10. As shown inFigure 9, the latohbar I28 is guidingly and slidably received in alongitudinally extending channel ISQ; while the pinion I24 is receivedin a recess I32 opening downwardly from the guiding channel I38.

' As shown in Figure 8, the upwardly extending actuating arm 84pivotally engages the aperture I28 of the lever N8, of the upperlatchingshown best in Figure 3, the door jamb It at the front edge of the dooris provided with suitable keeper and retainer means for receiving thelatch bars !28 of the latching mechanisms 24 and 2t and the main lockingbar of the housing l8. Preferably, a single keeper strip I34 is securedto the jamb iii as by fastening screws I36, this retaining strip beingprovided with recesses I38 and mate receive respectively the latchingbars of the upper and lower latching members 2 5, and 26. ate its ends,the keeper plate 534 is provided with an additional keeper M2 providedwith a longitudinally extending slot 844 adapted to receive the mainlatching bar 58, this plate being retained as by fastening means hi9.

From the foregoing, the operation of the device will be readilyunderstood and further explanation is deemed to be unnecessary.

Since numerous modifications will readily occur to those skilled in theart after a consideration of the foregoing specification andaccompanying drawings, it is not intended to limit the invention to theexact construction shown and described, but all suitable modificationsand equivalents may be resorted to falling within the scope of theappended claims.

What is claimed as new is:

1. In a locking assembly for a door having front and rear door jambscomprising a locking mechanism mounted upon the door at the front edge Ithereof, a casing for said locking mechanism, said assembly comprising aplurality of bolt housings adapted to be mounted upon the door at thefront and rear edges thereof, bolt keepers adapted to be mounted in thefront and rear door jambs, a lock shaft in said casing, a first cam onsaid shaft, a main latch in said casing connected to said first cam, apair of bolts in a pair of bolt housings at the front edge of the door.a second cam on said shaft, means connecting Intermedisaid pair of boltsat the front edge of the door to said second cam, bolt actuatingmechanisms for said pair of bolts, a third cam on said shaft, and meansconnecting a bolt at the rear edge of said door to said third cam.

2. The combination of claim 1 wherein said main latch comprises ahorizontally slidable plate surrounding said first cam.

3. The combination of claim 1 wherein said first mentioned connectingmeans comprises a pair of parallel vertically slidable rods, one of saidrods embracing said second earn, the other rod being connected to saidfirst rod.

4. The combination of claim 1 wherein said first connecting meansincludes parallel upper and lower vertical rods, the upper rod beingconnected to said second cam, the lower rod being connected to saidupper rod above said sec-- ond cam and locking mechanism, and meansoperatively connecting the opposite ends of the rods to said boltactuating mechanisms.

WILLIAM FLOYD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,006,211 Hermon Oct. 17, 19111,189,991 Mugler July 4, 1916 1,225,427 Gage May 8, 1917 1,408,629Palmer Mar. 7, 1922 1,892,512 Kemp Dec. 27, 1932 2,390,731 AxhandlerDec. 11, 1945 FOREIGN PATENTS Number Country Date 238,359 Great BritainAug. 20, 1925 297,615 Great Britain Sept. 27, 1928

